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Diagnostic instruments
Start the engine.
The values may be displayed in three different ways: in one numeric form and in two graphic forms; to select the desired
display type, press the "Value display" icon.
The measured value is indicated alongside the letter (A) or (C) identifying the cable used for the measurement: i.e. if you
used connector (A) of the cable (7), the value measured will displayed next to the letter (A) on the screen.
Oil pressure test values:
Warm engine
(Minimum oil temperature = 80 °C)
1,100÷1,300 rpm
greater than 0.8 bar.
3,500÷4,000 rpm
greater than 4 bar.
Important
The maximum pressure must never exceed 6.0 bar.
Excessively high pressure may indicate that the relief valve is stuck. Excessively low pressure, on the other hand, may be
caused by the relief valve being stuck in the open position, the relief valve spring being too weak, or a faulty oil pump.
Other causes are excessively worn seals and gaskets or a badly worn engine.
Remove the tool and refit the pressure switch (1) along with its seal. Secure it to a torque of 19 Nm (Min. 17 Nm - Max.
Engine torque
settings).
21 Nm) (Sect. 3 - 3,
Reconnect the electric system connector (A) to the pressure switch.
Disconnect the DDS diagnosis instrument.
Cylinder compression test
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